Royal Bank of Canada is trading 3.44% lower at $197.73 in pre-market, with no verified company-specific announcement explaining the decline. - RBC raised its prime rate from 4.45% to 4.70%, effective October 29, following a Bank of Canada rate increase; other major Canadian banks made the same change, so it is not a distinct RBC catalyst. - Sentiment is cautious, with Nasdaq down 1.30%, but available evidence does not establish this as the direct cause.